Yieldable transferrer arm for automatic looms



March 30 192 6.

- E. R. HOLMES YIELDABLE TRANSFERRER ARM FOB AUTOMATIC LOOMS Filed July19, 1924 Patented Mar. 30, was

1 {UNITED STATES 1,578,519 PATENT. OFFICE.

' *ELBRIDG-E R. HOLMES OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON85 KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

v YIELDAIBLE TRANSFERRER ARM FOR AUTOMATIC LOOMS.

Application filed. July 19, 1924. Serial 1 1'0."727,07"2'.2 A

To all whom it may concern:

, Be it known that I, ELBRIDGE R. HOLMES, acitizen of the United States,residing at WVorcester, in. the county of lVorcester and State ofMassachusetts, have invented a new and useful-Yieldable Transferrer Armfor Automatic Looms, of whicli'the following is a specification.

I This invention relates to improvements n weftreplenishing mechanismfor looms and more particularly to the transferrer,

arm by means of which, a full bobbin is moved into a shuttle carrying adepleted bobbin. 1

In the usual form of multi-colorfweft replenishing mechanism such, forinstance, as that shown;v in Patent No. 1,030,748, the bobbinsaremovedfrom a plurality of compartments to a common discharge ortransfer position. The transferrer arm is located between inclinedguides and moves toward thebobbin to betransferred as the lay approachesthe forward limit;v of its motion. It is usual to have solidpart of thelay engage a latch which is pivoted; to the trans .ferrer arm so thatrtle latter is required to Qmovef-as-the lay advances. Occasionally a.bobbin will not move entirely to transfer f position before thetransferrer begins to. descend and the bobbin willbe caughtbetween thetransferrer arm and the guideway. Under these circumstances, with thelay moving and thetransferrer held against motion, some part necessarilybreaks and 1t has been found in practicethat the lower portion of theinside frame of the replenishmg mechanism isthe part-which mostfrequently vis ruptured.-

It i theprincipal object of my present invention to] provide transfermechanism' constructed with a breakable portion which ;is sufficientlystrong underall normal conditions to effect proper transfer but is weakenough to break when the parts are subjected to abnormal strain, thepart to be. broken being readily replaceable and relaevtivelyinexpensive. i p

7 Thereplenishing mechanism of the type referred to must be restored tonormal condition at the end of the forward stroke of the lay which wouldordinarily result in a transfer. This is usually accomplished by meansof'two devices'whichform parts of I the replenishing mechanism; One ofthese Fig. 2. i

devices is the usual shuttle feeler and the other isa transferrer latchwhich is lifted to connect the transferrer arm'temporarily to the lay.The latch is lifted, by a rod, the. upper end of which is connected tothetop shaft of the replenishing mechanism and the lower end of which islooped under a cam face formed on the lower part of the latch. As thelatch is moved'forward, the

cam face thereon depresses the rod to reset the top shaft. If any partof the transfer mechanism breaks and the shuttle feeler be defective thereplenishing mechanism will remain unset. It is a more particular ob ectof my present. invention to provide a transfer mechanism which willbreak' when subected to unusual strain but arranged so that thereplenishing mechanism may be reset even though the parts of thetransferrer j 7 arm have been ruptured. 4 Y

With these and other objects "in view which will appear'asthedescription pro- Zceed's, my invention resides in thecombinw tion andarrangement. of parts hereinafter 'de'scribed'and set forth. in theclaims.

the accompanying drawing, wherein 1 have shown a convenient form of myinvention,

Fig. lis a side elevation of a ersonae 1 the replenishing mechanismhaving my'in- 7 vention applied thereto, with the outside plate removedfor the sake of clearness, 1 Fig. 2 is a view similar to Fig.1 but withthe parts shown as they would appearwhen 'rupturedand after resettingthe magazine,

.Figf3' is a vertical section on line 3-3 of Fig. 1, and

Fig.4 is aver tical section on line 4 -4: of.

Referring to the'drawing, it will be seen' that I have provided a loomside 10 on which is secured the frame 11 of a replenishing mechanismindicated at 12. transferrer arm 13 is pivotally'mounted on a fixed stud14' and has a bobbin engaging heel 15 and a pair of depending'arms 16between which extends a stud 17. The lay 18 is provided v with abunter19 secured thereto and positioned for engagement with atransferrer; latch 20 which isadjustably'held to latch holder 21 bymeans of bolt '22. The'reple'n- 'ishing mechanism is providedwith aguide' 23 which is positioned to receive bobbins 7 which may originatefrom compartments' 24:1; 1;;

usual construction and for a more complete description thereof referencemay be had to the aforesaid Patent No. 1,030,748.

. My invention relates more particularly to the means for connecting thetransferrer latch holder 21 to the stud 17 and in carrying outmyjinvention I' provide said holder with an upward extension havingformed thereon a semi-circular bearing ,31 which together with asimrlarzbearing 32 formed in a separatebearing' block 33 forms thebearing for stud 17. 'The said block 33 is held to the extension 30 bymeans of a bolt 34 which -.is of'light construction and serves to holdthe bearing p ortions3land 32 together.

In the normal operation of the replenishing mechanism the parts will bein the position shown in Fig. land at the time of transfer the bobbinengaging heel 15 will descend as the lay 18 continues to advance,

the bobbin sliding down guideway 23 into position to be engaged by thetransferrer and moved into the shuttle- However,

should the bobbin W be slow in movingto 1 transferposition due'either tobeing oversize or to the improper releasing thereof the heelv 15 willengage it and be held against further downward motion. At this time the-,lay, as it continues to move forward, will .move' the bunter 19, latch20, and latch holder '21- but the block 33' will be held against forwardmovement by the stud :17

and the bolt 34 will break, permitting the parts to assume some suchposition as shown in v Fig. 2. Thetransferrer latch 20 isprovided. onthe under surface thereof with a cam face 35 andthe latch holder isprovided with a surface 36 on the upper portion there- Qof which liesunder the stud 17. As the latch "moves forward under influence ofthe.lay and the rod 25. is in raised position the camface 35 will engagethe lower edge of the rod, the first effect of which will be to moveface 36 against stud 17after which further upward movement of the latchwould be prevented and as'the same moves forward the rod 25 will bemoveddownwardly to reset'the replenishing mechanism. From the foregoingitwill be seen that I have provided a very simple construction by whichabnormal" strains incident to improper transfer may berelieved and thatthe movement of the parts is such that when the lower parts of thetransferrer mecha hism become ruptured the replenishing mechanism willbe properly set. I am aware that Patent No. 880,810 granted March 3,1908 to Morell shows a yieldlng connection between the lay and thetransferrer, but with such a device faulty transfers can occurrepeatedly without the attendant being aware of the fact, whereas in. mypresent construction the loom is stopped by the action of the fillingstop mo tion' (not shown) which will operate subsequently to thebreaking of the bolt 34. Also, the patent to Morell fails to show anydevice for resetting the replenishing mechanism. The parts as presentedherewith add very {little to the cost of the transferrer and latch andpermit the reassembly of a broken connection atslight expense;

Having thus described my invention it will be apparent that changes andmodifica tions may be made therein, by those skilled in the art withoutdeparting fromthe spirit and scope of the invention, and I do not wishto be limited to the details hereindisclosed, but what I claim is:

' 1. In a weft replenishing mechanism for looms, a lay, a pivotedtransferrer arm, a latch, a support for the latch pivoted to and movingwith the transferrer arm and movable to a position to be engaged by thelay,

said pivotal connection being formed'in part by a breakable membersufiiciently strong under normal conditions to effect transfer but weakenough to be broken under conditions of abnormal transfer to disconnectthe latch from the transferrer arm. to render subsequent transferimpossible.

2. In a'weft replenishing mechanism for V looms, alay, a transferrerarm, a latch movableto engage the 'lay, a two part holder for the latch'pivotally connected to' and moving with the transferrer arm, and abreakable member holding said two parts of thelatch holder together,said member being sufliciently strong to effect transfer under normalconditions but being breakable under abnormal conditions to disconnectthe quent transfer impossible.

3. In a weft replenishing mechanism for "latch from the transferrer torender subselooms, a lay, a transferrer arm, a stud car: ried by thetransferrer arm, a latch engageable with the lay, a two part holder forthe latch, the parts of said holder having pivotal contact with thestud, and a breakable member holding said parts together, said transferunder normal conditions but weak enough to break under abnormalconditlons to effect separation of the latch from the transferrer arm. V

4. In a-weft replenishing mechanism for looms, a lay, transferrermechanism including an arm, a yieldable connection between the lay andthe transferrer arm to yield under abnormal conditions, and resettingmember'being sufliciently strong to effect means for the replenishingmechanism positioned to be acted on by the transferrer mechanism to havea resettin movement after said connection has yielde 5. In a weftreplenishing mechanism for looms, a transferrer arm, a 1ay, a latchconnected to the arm, means when raised to lift the latch in the path ofthe lay and when lowered to reset the replenishing mechanism,connections between the transferrer arm and the latch suflicientlystrong under normal conditions to effect transfer but weak enough underabnormal conditions to break, and means formed on the latch andoperatively positioned with said first named means to lower said firstnamed means after the connection between the arm and the latch has beenbroken.

6. In a weft replenishing mechanism for g 20 a latch holder, a studcarried by the translooms, a lay, a transferrer arm, a latch,

ferrer arm, means defining a pivotal connection between the latch holderand the stud,

. In testimony whereof I have hereunto af- 8.0

fixed my signature.

ELBRIDGE R. HOLMES.

